Stone is a male brown bear. He has light brown fur and eyes. He has a low gruff voice.
Stone was born on Terra Woods alongside his brother. When Atmosians raided Terra Woods, Stone's mother fought hard to protect her children but perished in front of them. Stone and his brother were kidnapped by pterodactyls. Stone was dropped on Terra Atlas where he was raised. He is often looked at as the muscles of Nightstrike's Clan and The Northern Lights. Despite his size and frightening appearance, Stone is kind and good natured and is loyal to his friends. He seems to have a strong bond with Slash.
Trivia:
He is named after his impenetrable skin and enhanced strength.
Stone named himself.
The whereabouts of Stone's brother is unknown.